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mars1129 [50]
3 years ago
10

I need help with this for homework, I also need all the work, Help is appreciated:)

Mathematics
1 answer:
ollegr [7]3 years ago
8 0
Total cost = cost of paper clips + cost of index cards
Total cost = cost of one box of paper clips * number of boxes + cost of one box of index cards * number of boxes
55.40=15p+7i \\ 61.70=12p+10i \\ \\ 61.70-12p=10i \\ i = \frac{61.70-12p}{10} \\ i=6.17- \frac{6p}{5} \\\\ 55.40=15p+7(6.17- \frac{6p}{5})\\55.40=15p+43.19-\frac{42p}{5}\\55.40=15p-8.4p+43.19\\12.21=6.6p\\p=1.85 \\\\55.40=15(1.85) +7i\\55.40=27.75+7i\\7i=27.65\\i=3.95
So your answers are:
p = $1.85
i = $3.95
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Here is a link with my work:

https://docs.google.com/document/d/1qWHf3acY0HKyWf8hU-_CKpbPZO214G__EGPvn53vM2I/edit?usp=sharing

<em>Hope this helps! :)</em>

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